Thankfully here in Nova Scotia the scrap yard I deal with is super friendly and glad to sell metal . Brass runs around 3 dollars a pound, aluminum is about a buck, and carbide is 15, often for unused bits . They also save interesting brass artifacts for me and over the years I have collected many WW 1 vintage artillery shells and even a brass survey theodolite, for the metal price in pounds. Often find round bar and hex stock in big lengths ( up to 3 od by 10 feet) . Bronze is also available usually as sheet up to .25 thick. Living in a city that has been here 250 years means a lot of old house tear downs, and old businesses frequently yield unusual stuff. Periodically a real find like a babbit metal ingot shows up. Its a real gold mine, and some of my favorite times are seeing whats new in scrap this week. Most of the staff on the floor in this big indoor/outdoor setup are ladies and they are very helpful and friendly. I dont go to the metal retail businesses where metal costs are astronomical and selection limited much, having amassed enough scrap non ferrous to last the rest of my existence.
Having said that metal theft in this region, especially power lines etc is a major problem. It seems if you are desperate for your next fix you just tie your pickup to a power line and drag it away. There have been a number of electrocution deaths here related to trying to steal live high voltage wire.
One thing I do is regularly bring my scrap yard friends treats, coffee , gatorade in the summer, cookies, and sometimes cases of adult beverages in the season. Last year I dropped off a pallet of assorted food just before Christmas as they work for minimum wage. They are always happy to see me wether I have brought them a treat or not and are some of the nicest people I know.